Lewis herrick



(No Model.)

L. HERRIGKQ GLAMPING DEVICE FOR ROUTING MAGHINB$.

Patented Nov. 2, 1897.

ns co. PHOTO-UT UNITED STATES PATENT Citron.

LEYVIS I-IERRICK, OF NEWV HAVEN, CONNECTICUT, ASSIGNOR TO THE v LOVEJOY COMPANY, OF NEW YORK, N. Y.

CLAMPING DEVICE FOR ROUTING-MACHINES.

SPECIFICATION forming part of Letters Patent No. 593,017, dated November 2, 1897.

Application filed November 12, 1896. Serial No. 611,811. (No model.)

T0 to whom it may concern.-

Be it known that I, LEWIS linemen, of New Haven, in the county of New Haven and State of Connecticut, have invented a new and useful Improvement in Clamping Devices for Routing-Machines, of which the following is a specification.

My invention relates to an improvement in clamping devices for routing-machines, and more particularly to means for clamping a rotary sliding work-holding cylinder against a rotary movement, while permitting a longitudinal movemenhand against a slidin g movement, while permitting a rotary movement.

A practical embodiment of my invention is represented in the accompanying drawings, in which-e Figure 1 is a partial front view of a routing-machine, showing the work-supporting cylinder and the parts in immediate proxi1nity thereto. Fig. 2 is a horizontal section through the same along the plane of line 2 2 of Fig. 1, and Fig. 3 is a partial vertical section from front to rear along the plane of line 3 ,3 of Fig. 1. I

The clamping mechanism which forms the subjecbmatter of my present invention is particularly adapted to use in connection with routing-machines for electrotype-plates, and so much only of the machine is shown in connection with my present application as may be suificient to show the practical operation of the clamp.

The work-holding cylinder is denoted by H, and it is supported upon a shaft G in such a manner as to rotate therewith and also slide independently thereof. An end of the cylinderH-dn the present instance the end toward the operator-is provided with an inwardlyprojecting iiange h, leaving between it and the end of the cylinder an annular groove a The handles for operating the cylinder on its support are denoted by I I and are connected by a common stock 1), which loosely embraces the shaft G at its central portion. The stock 71 is secured to the cylinder by means of angle-pieces K K, which are drawn against the inner faces of the flange h by means of thumb-nuts 7a 71:, which have a screw-threaded engagement with pins k 10 projecting outwardly through the handle- The stop N is free to move longitudinally with the cylinder H along the shaft G and is held to the cylinder so as to permit the latter to rotate independently of the stop by means of a shoe n which is adapted to travel in the annular groove 01 at the end of the cylinder, the said shoe n being spaced from the stop N the thickness of the flange 7i by means of a spacing-piece a the said spacing-piece and shoe being fixed to the stop N by means of a screw u At the front of the handle-stockz' there are locked two sliding bars 0 O, which are held in position by means of straps o o, fixed to the handle-stock and embracing three sides of the bars 0 0, respectively. The said sliding bars 0 O are further held in position by means of the reduced extensions 76 of the nuts k which extensions pass through elongated slots 0 o in the bars 0 O. The inner end of the sliding bar 0 is provided with a V-shaped recess 0 the slanting walls of which engage the free ends of the pair of clamping-levers P P, pivoted at p to the front of the handle-stoclc and provided with curved recesses p 132, adapted to engage the opposite sides of the shaft G when the jaws are drawn together. The jaws P P are held normally separated by means of an interposed spring 19 between their free ends.

The sliding bar 0' is provided at its inner end with the rearwardly-extending arm 0 carrying at its inner end a shoe 0, having a V- shaped edge adapted to engage the V-shaped groove Z in the periphery of the disk L when the sliding bar 0' is forced inwardly.

The sliding bars 0 O are each forced inwardly, the one by means of a lever Q. and the other by means of a lever Q, pivoted to suitable supports at the front of the handle-stock 2' and having their short arms connected with the sliding bars at q g, respectively. The levers Q Q are located within convenient reach of the fingers of the hands of the operator when the hands are grasping the handles I I. I

In operation when it is desired to clamp the cylinder H against a rotary movement, While permitting it to slide longitudinally along its supporting-shaft G, the lever Q is pressed toward the handle-stock 71, thereby sliding the bar 0 toward the shaft Q, and with it the shoe 0 into engagement with the disk L, therebylocking the handle-stock and hence the cylinder H to the disk L, which latter is locked against a rotary movement, and thereby locking the cylinder 1-1 against a rotary movement. When so locked, the cylinder I-I may still be slid freely along the shaft G at pleasure. If it be desired to lock the cylinder against a sliding movement along the shaft G, while permitting a rotary movement, this may be accomplished by releasing the lever Q and pressing the lever Q toward the handle and stock, thereby forcing the clamping-levers P P into engagement with the shaft G.-

When so locked to the shaft G, the cylinder may still be rotated, together with the shaft G, it being assumed that the shaft G is sup ported in bearings which permit it to rotate freely.

When both levers Q Q are left free, the cylinder itself may be manipulated-by means of the handles I I, either rocked or slid longitudinally, or both,as may be desired. On the other hand, if both the levers Q Q are pressed toward the handle-stock the cylinder will be held rigidly against movement in any direction, excepting directly toward and away from the tool.

What I claim is 1. The combination with a work-holder and a shaft forming a support for the work-holder, of a disk held against rotary movement, a sliding bar fixed to move with the work-support, a friction device carried by the sliding bar in position to move into and out of en gagement with the disk and means for operating the bar at pleasure to lock the workholder to the disk and release it therefrom, substantially as set forth.

2. The combination with a work-holder and a shaft on which the work-holder is mounted, of a sliding bar fixed to move with the workholder, a clamp under the control of the sliding bar to lock the work-holder to the shaft and means for operating the sliding bar, substantially as set forth.

3. The combination with a work-holder, a shaft on which the Work-holder is mounted, the said shaft being free to rotate together with the work-holder, of a disk held against a rotary movement, sliding bars fixed to move with the work-holder, a clamp fixed to move with the work-holder and in position to engage the shaft, a friction device fixed to move with the work-holder and in position to engage the said disk and independent means for operating the sliding bars to throw the clamp into engagement with the shaft or the friction device into engagement with the disk to lock the cylinder to the shaft, or to the disk, or both, at pleasure, substantially as set fort-h.

LEWVIS HERRIOK.

Vitnesses:

FREDK. HAYNES, EDWARD VIEsER. 

